Door-bolt



(Mode1.)

' R. G. LEININGER.

DOOR BOLT.

Patented July 28, 1885.

Izzy/5 224L72 W ri 7 UNITED STATES PATENT OFFICE.

RALPH G. LEIN IN GER, OF PHILADELPHIA, PENNSYLVANIA.

DOOR-BOLT.

SPECIFICATION forming part of Letters Patent No. 322,944, dated July 28, 1885.

Application filed September 2, 1884. (ModeL) To aZZ whom it may concern.-

Be it known that I, RALPH G. LEININGER, a citizen of the United States, residing at Philadelphia,in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Fastenings for Cellar and other Doors; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon,which form a part of this specification.

This invention relates to fastenings for cellar and other doors, and has for its main object to provide efficient and easily-operated means, whereby to lock or fasten the door from the outer side in such manner that it cannot be unlocked except from within the cellar or other inclosure.

To the ends described the invention consists in certain novel constructions and combinations of parts, as'will be hereinafter more fully described, and pointed out in the claims.

In the drawings, Figure 1 is a bottom plan view of the cellar-door. Fig. 2 is an end view thereof. Fig. 3 is an edge view of one of the door-sections. line was, Fig. 1. Fig. 5 is a perspective view of the pivot portion of the bolt-bar, showing the operating-spring.

The door is preferably formed of the doors or sections A B,which are hinged in the usual manner, and one of the doors is provided with an overlapping portion, a, as shown in Fig. 2, to close the joint between the sections. On the under side of the door A, and close to the swinging edge thereof, I pivot midway its ends the bolt 0, so pivoted that it may be rotated in a plane parallel to that of the door, as will be seen. In connection with the bolt I provide a spring suitably disposed and connected to give the bolt a rotary movement in the direction indicated by the arrow, Fig. 1. I prefer for such purpose to employ a spring, D, coiled around the pin on which the bolt pivots and having one end made fast to the bolt and the other to the pin or to the door. A stop, E, is secured on the bottom of the door A in position about as shown in Fig. 1,

Fig. 4 is a sectional view onv to be engaged by the rear end of the bolt and hold same from moving beyond the position shown across the joint of the door-section, with its forward end extended beyond the swinging, edge of door A, and securely looking the doors, as will be understood.

In Fig. 1 the bolt is shown in full lines in its locked position.

In unlocking the door the bolt is turned back to the dotted position about parallel with, but not across the joint of the door-sections, in which position it is held by a latch, F, made of spring metal and bent to form the shank or portion f, which is secured to the under side of the door, and the holding portion f, which extends below the bolt and is formed with a slip or shoulder, fflsuited to engage and hold the forward end of the bolt, as will be understood. I prefer to bevel the end of the latch, and to provide the bolt with a metallic wearpiece, 0, arranged in position and adapted to engage the latch, as will be understood. The latch holds the bolt by an upward tension, and will retain the said bolt thereby in the position shown in Fig. 1 and in Fig. 2. In order to release the bolt and lock the door, I provide the latter with an opening or perforation, G, arranged above the latch and fitted to permit the insertion of any instrument, as G, the lower end of which will bear against the latch, and by forcing said lever down it will depress the lever and release the bolt, which is automatically actuated into the locked position. I prefer to cover the opening G with a plate or cover, hinged at one edge and capable'of being turned downward over the opening, as will be understood from Fig. 4. I also prefer to mortise the door around the opening G into which to turn plate g, so the latter may rest flush with the top of the door, presenting thereby no projection or protuberance thereon.

When the parts are as shown in Fig. 2,and indicated in Fig. 1, the door is unlocked, and may be opened or closed at will.

When it is desired to lock the door, it is closed, as shown, and the spring-latch is depressed, as described, releasing the bolt, which turns under the door B and locks the cellardoor securely, as will be seen.

By my invention it will be seen I provide efiicient and easily-operated means whereby to lock the door from the outside, and so it cannot be unlocked except from within the cellar, to which access must be had for such purpose through the upper portion of the house, or in other manner except through the cellar-door. When in the cellar, the door may be unlocked by turning the bolt to the position indicated in Fig. 1.

It is manifest that it would involve no departure from my invention to properly weight the bolt to give it rotation, instead of securing such motion by a spring, as described; also, that the stop E might be arranged in the door B instead of A; or the door B might be dispensed with, and the door A made to fill the frame, and the latter be formed with a slot or recess into which to turn the point orforward end of the bolt; but I prefer to employthe construction and arrangement as shown and before described.

Having thus described my invention,what I claim, and desire to secure by Letters Patent, 1s

1. The combination, with the door A, having opening G, of the bolt 0, pivoted 011 the door A, the spring D,wound around the pivot or pintle of bolt 0 and having one end secured to the door and its other end engaged with the bolt, and a latch, F, arranged on the door A, in position to be actuated through opening G, substantially as set forth.

2. The combination, with the door A,'having a latch, F, of the bolt 0, pivoted to the door A, a spring, D, wound around the pivot or pintle of bolt 0, and having one end secured to the door Aand its other end engaged withbolt 0, and a stop, E, substantially asset forth. In testimony whereof I affix my signature in presence of two witnesses.

' RALPH G. LEININGER. Witnesses:

AL. P. BURoHnLL, MARY C. FISHER. 

